Invention Grant
- Patent Title: Sintered bearing and manufacturing process therefor
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Application No.: US16402698Application Date: 2019-05-03
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Publication No.: US10907685B2Publication Date: 2021-02-02
- Inventor: Yoshinori Ito , Tomonori Yamashita
- Applicant: NTN CORPORATION
- Applicant Address: JP Osaka
- Assignee: NTN CORPORATION
- Current Assignee: NTN CORPORATION
- Current Assignee Address: JP Osaka
- Agency: Wenderoth, Lind & Ponack, L.L.P.
- Priority: JP2013-208277 20131003,JP2014-007911 20140120,JP2014-008892 20140121
- Main IPC: F16C33/10
- IPC: F16C33/10 ; F16C33/12 ; F16C33/14 ; C22C33/02 ; C22C38/16 ; F16C23/04 ; B22F1/00 ; B22F5/10

Abstract:
A sintered bearing (1) contains as main components iron, copper, a metal having a lower melting point than copper, and a solid lubricant. The sintered bearing (1) includes a surface layer (S1) and a base part (S2). The surface layer (S1) is formed mainly of flat copper powder arranged so as to be thinned in a thickness direction. In the base part (S2), an iron structure (33) and a copper structure (31c) brought into contact with the iron structure are formed of partially diffusion-alloyed powder in which copper powder is partially diffused in iron powder. Thus, a sintered bearing which achieves a balance between wear resistance of a bearing surface and strength of the bearing, and realizes low cost can be provided.
Public/Granted literature
- US20190257356A1 SINTERED BEARING AND MANUFACTURING PROCESS THEREFOR Public/Granted day:2019-08-22
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